package com.hyj.forum.controller;

import com.hyj.forum.common.AppResult;
import com.hyj.forum.common.ResultCode;
import com.hyj.forum.config.AppConfig;
import com.hyj.forum.model.User;
import com.hyj.forum.services.IUserService;
import com.hyj.forum.utils.MD5Util;
import com.hyj.forum.utils.StringUtil;
import com.hyj.forum.utils.UUIDUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import lombok.NonNull;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

//对Controller进行API说明
@Api(tags = "用户接口")
//日志注解
@Slf4j
//这是一个返回数据的Controller
@RestController
//设置路由映射 一级路径
@RequestMapping("/user")
public class UserController {

    @Resource
    private IUserService userService;

    /**
     * 用户注册
     * @param username 用户名
     * @param nickname 用户昵称
     * @param password 密码
     * @param passwordRepeat 确认密码
     * @return
     */
    @ApiOperation("用户注册") //API方法注解
    @PostMapping("/register")
    public AppResult register(@ApiParam("用户名") @RequestParam("username") @NonNull String username,
                              @ApiParam("昵称") @RequestParam("nickname") @NonNull String nickname,
                              @ApiParam("密码") @RequestParam("password") @NonNull String password,
                              @ApiParam("重复密码") @RequestParam("passwordRepeat") @NonNull String passwordRepeat) {
        /*if (StringUtil.isEmpty(username) || StringUtil.isEmpty(nickname) || StringUtil.isEmpty(password)
        || StringUtil.isEmpty(passwordRepeat)) {
            //返回错误信息
            return AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE);
        }*/

        //校验密码与重复密码是否相同
        if (!password.equals(passwordRepeat)) {
            log.warn(ResultCode.FAILED_TWO_PWD_NOT_SAME.toString());
            //返回错误信息
            return AppResult.failed(ResultCode.FAILED_TWO_PWD_NOT_SAME);
        }
        //准备数据
        User user = new User();
        user.setUsername(username);
        user.setNickname(nickname);
        //处理密码
        //生成salt
        String salt = UUIDUtil.UUID_32();
        //生成密码密文
        String encryptPassword = MD5Util.md5Salt(password, salt);
        //设置密码和盐
        user.setPassword(encryptPassword);
        user.setSalt(salt);

        //调用service方法
        userService.createNormalUser(user);
        //返回成功
        return AppResult.success("注册成功");
    }

    /**
     * 用户登录
     * @param username 用户名
     * @param password 密码
     * @return
     */
    @ApiOperation("用户登录")
    @PostMapping("/login")
    public AppResult login(HttpServletRequest request,
                           @ApiParam("用户名") @RequestParam("username") @NonNull String username,
                           @ApiParam("密码") @RequestParam("password") @NonNull String password) {
        //调用Service中的登录方法，返回user对象
        User user = userService.login(username, password);
        if (user == null) {
            //打印日志
            log.warn(ResultCode.FAILED_LOGIN.toString());
            //返回结果
            return AppResult.failed(ResultCode.FAILED_LOGIN);
        }
        //如果登录成功 把user对象设置到Session作用域中
        HttpSession session = request.getSession(true); //表示没有session对象时 创建一个新的
        session.setAttribute(AppConfig.USER_SESSION,user);
        //返回结果
        return AppResult.success();
    }

    @ApiOperation("获取用户信息")
    @GetMapping("/info")
    public AppResult<User> getUserInfo(HttpServletRequest request,                     //非必传项
                                       @ApiParam("用户id") @RequestParam(value = "id",required = false) Long id) {
        //定义返回的User对象
        User user = null;
        //根据id的值来判断用户对象的获取方式
        //如果id为空，从session获取当前登录的用户信息
        if (id == null) {
            HttpSession session = request.getSession(false);//不主动创建session
            //从session获取当前登录的用户信息
            user = (User) session.getAttribute(AppConfig.USER_SESSION);
        } else {
            //id不为空，从数据库中按id查询用户信息
            user = userService.selectById(id);
        }
        //判断user是否为空
        if (user == null) {
            return AppResult.failed(ResultCode.FAILED_USER_NOT_EXISTS);
        }
        //返回正常的结果
        return AppResult.success(user);

    }


    @ApiOperation("退出登录")
    @GetMapping("/logout")
    public AppResult logout(HttpServletRequest request) {
        //获取session对象
        HttpSession session = request.getSession(false);
        //判断session是否有效
        if (session != null) {
            //打印日志
            log.info("退出成功");
            //表示用户在登录状态，直接销毁session
            session.invalidate();
        }
        return AppResult.success("退出成功");
    }

    /**
     * 修改个人信息
     * @param username 用户名
     * @param nickname 昵称
     * @param gender 性别
     * @param email 邮箱
     * @param phoneNum 电话号码
     * @param remark 个人简介
     * @return
     */
    @ApiOperation("修改个人信息")
    @PostMapping("/modifyInfo")
    public AppResult modifyInfo(HttpServletRequest request,
                                //@SessionAttribute(AppConfig.USER_SESSION) User user,
                                @ApiParam("用户名") @RequestParam(value = "username",required = false) String username,
                                @ApiParam("昵称") @RequestParam(value = "nickname",required = false) String nickname,
                                @ApiParam("性别") @RequestParam(value = "gender",required = false) Byte gender,
                                @ApiParam("邮箱") @RequestParam(value = "email",required = false) String email,
                                @ApiParam("电话号码") @RequestParam(value = "phoneNum",required = false) String phoneNum,
                                @ApiParam("个人简介") @RequestParam(value = "remark",required = false) String remark) {
        if (StringUtil.isEmpty(username) && StringUtil.isEmpty(nickname)
            && StringUtil.isEmpty(email) && StringUtil.isEmpty(phoneNum)
            && StringUtil.isEmpty(remark) && gender == null) {
            //返回错误信息
            return AppResult.failed("请输入要修改的内容");
        }
        //从session获取用户ID
        HttpSession session = request.getSession(false);
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);
        //封装对象
        User updateUser = new User();
        updateUser.setId(user.getId()); //用户Id
        updateUser.setUsername(username); //用户名
        updateUser.setNickname(nickname); //昵称
        updateUser.setGender(gender); //性别
        updateUser.setEmail(email); //邮箱
        updateUser.setPhoneNum(phoneNum); //电话号码
        updateUser.setRemark(remark); //个人简介
        //调用Service
        userService.modifyInfo(updateUser);
        //查询最新的用户信息
        user = userService.selectById(user.getId());
        //把最新的用户信息设置到session中
        session.setAttribute(AppConfig.USER_SESSION,user);
        //返回结果
        return AppResult.success(user);
    }

    @ApiOperation("修改密码")
    @PostMapping("/modifyPwd")
    public AppResult modifyPassword(HttpServletRequest request,
                                    @ApiParam("旧密码") @RequestParam("oldPassword") @NonNull String oldPassword,
                                    @ApiParam("新密码") @RequestParam("newPassword") @NonNull String newPassword,
                                    @ApiParam("确认密码") @RequestParam("passwordRepeat") @NonNull String passwordRepeat) {
        //校验新密码与确认密码是否相同
        if (!newPassword.equals(passwordRepeat)) {
            //返回错误描述
            return AppResult.failed(ResultCode.FAILED_TWO_PWD_NOT_SAME);
        }
        //获取当前登录的用户信息
        HttpSession session = request.getSession(false);
        User user  = (User) session.getAttribute(AppConfig.USER_SESSION);
        //调用service方法
        userService.modifyPassword(user.getId(), newPassword,oldPassword);
        //销毁session
        if (session != null) {
            session.invalidate();
        }
        //返回结果
        return AppResult.success();
    }
}
